X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ftsdl-trace-class-visitor.hpp;fp=src%2Fbin%2Flttng-sessiond%2Ftsdl-trace-class-visitor.hpp;h=6d629e2beff51dbe35268ca8b8f4721bf7e4031b;hb=d7bfb9b0fa35679d3e728b9165699d9faf905539;hp=0000000000000000000000000000000000000000;hpb=0220be14254fac4f7af642fd6630282b29776a70;p=lttng-tools.git

diff --git a/src/bin/lttng-sessiond/tsdl-trace-class-visitor.hpp b/src/bin/lttng-sessiond/tsdl-trace-class-visitor.hpp
new file mode 100644
index 000000000..6d629e2be
--- /dev/null
+++ b/src/bin/lttng-sessiond/tsdl-trace-class-visitor.hpp
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#ifndef LTTNG_TSDL_TRACE_CLASS_VISITOR_H
+#define LTTNG_TSDL_TRACE_CLASS_VISITOR_H
+
+#include "trace-class.hpp"
+#include "stream-class.hpp"
+#include "event-class.hpp"
+
+#include <vendor/optional.hpp>
+
+#include <functional>
+
+namespace lttng {
+namespace sessiond {
+namespace tsdl {
+
+using append_metadata_fragment_function = std::function<void(const std::string& fragment)>;
+
+class trace_class_visitor : public lttng::sessiond::trace::trace_class_visitor {
+public:
+	trace_class_visitor(const lttng::sessiond::trace::abi& trace_abi,
+			append_metadata_fragment_function append_metadata);
+
+	/* trace class visitor interface. */
+	virtual void visit(const lttng::sessiond::trace::trace_class& trace_class) override final;
+
+	/* clock class visitor interface. */
+	virtual void visit(const lttng::sessiond::trace::clock_class& clock_class) override final;
+
+	/* environment visitor interface. */
+	virtual void environment_begin() override final;
+	virtual void visit(const lttng::sessiond::trace::environment_field<int64_t>& field) override final;
+	virtual void visit(const lttng::sessiond::trace::environment_field<const char *>& field) override final;
+	virtual void environment_end() override final;
+
+	/* stream class visitor interface. */
+	virtual void visit(const lttng::sessiond::trace::stream_class& stream_class) override final;
+
+	/* event class visitor interface. */
+	virtual void visit(const lttng::sessiond::trace::event_class& event_class) override final;
+
+private:
+	/* Coherent (parseable) fragments must be appended. */
+	void append_metadata_fragment(const std::string& fragment) const;
+
+	const lttng::sessiond::trace::abi& _trace_abi;
+	const append_metadata_fragment_function _append_metadata_fragment;
+	std::string _environment;
+};
+
+} /* namespace tsdl */
+} /* namespace sessiond */
+} /* namespace lttng */
+
+#endif /* LTTNG_TSDL_TRACE_CLASS_VISITOR_H */